ASVAB Electronics Information Practice Test 396415 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.02
Score	0%	60%

Review

Which of the following is not a common type of battery?

40% Answer Correctly

	power-cycle
	dry cell
	wet cell
	deep-cycle

Solution

Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery. The three most common types of batteries are dry cell (used in small devices like TV remotes), wet cell (used for cars), and deep-cycle (storage batteries used primarily for backup and emergency power).

What type of current flows in only one direction in a circuit?

82% Answer Correctly

	parallel
	series
	alternating
	direct

Solution

Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery.

Silver and gold are among the most highly conductive elements. Why is copper used much more often as a conductor in electrical circuits?

80% Answer Correctly

	all of these
	silver and gold are costly
	silver and gold are brittle
	copper is durable and relatively cheap

Solution

All conductors have resistance and the amount of resistance varies with the element. But, resistance isn't the only consideration when choosing a conductor as the most highly conductive elements like silver and gold are also more expensive and more brittle than slightly less conductive elements like copper. A balance needs to be struck between the electrical qualities of a material and its cost and durability.

The diameter of a number 12 wire is __________ the diameter of a number 6 wire?

52% Answer Correctly

	triple
	double
	more than
	less than

Solution

The larger the number the smaller the diameter of the wire. So, the diameter of a number 12 wire is less than the diameter of a number 6 wire.

In metals, increasing the temperature typically _____________ conductivity.

50% Answer Correctly

	decreases
	increases
	eliminates
	does nothing to

Solution

All conductors have resistance and the amount of resistance varies with the element. Metals exhibit increased resistance (and, therefore, lower conductivity) as their temperature increases.